Helena Valley Regulating Reservoir Weather Forecast
- 35
- 69
Decreasing Clouds
- 31
- 58
Rain Showers
- 26
- 42
Rain/Snow Likely
- 25
- 44
Chance Snow
- 28
- 52
Rain Likely
- 26
- 45
Chance Snow
- 26
- 49
Chance Snow
Today 27 Mar Helena Valley
Mostly cloudy. A 20 percent chance of rain Showers in the afternoon. Highs 65 to 70. South Winds up to 10 Mph shifting to the west in the afternoon.
Tonight 27 Mar Helena Valley
Mostly cloudy in the evening then clearing. Lows in the mid 30s. Southwest Winds 5 to 10 Mph.
Helena Valley Regulating Reservoir Temperature Statistics
March Temperature
Helena Regional Airport (5.6 miles)
Lowest 7 March, 2025
21.8 °FAverage March
41.7 °FHighest 25 March, 2025
69.1 °F
Climate (2020–Present)
Helena Regional Airport (5.6 miles)
Average Low 2020–2025
36 °FAverage 2020–2025
47.4 °FAverage High 2020–2025
59.1 °F